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Synthesis and Coordination Chemistry of Neutral Phospha(III)guanidines. Formation of 1-aza-3-phospha-4-metallacyclobut-1-ene Rings at Group 6 Metal Centres
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posted on 2023-06-08, 00:03 authored by Joanna Grundy, Martyn P Coles, Peter B HitchcockThe neutral phospha(III)guanidine compounds, Ph2PC{NR}{NHR}(1a, R = Cy; 1b, R =iPr), are reported. NMR spectroscopic data indicated the presence of the Esyn isomer in solution and structural studies confirmed this in the solid-state. Reaction of 1a with M(CO)4(pip)2[M = Mo, W; pip = piperidine] proceeded via displacement of the piperidine ligands to generate the complexes M[Ph2PC{NCy}{NHCy}](CO)4(2a, M = Mo; 3a, M = W). The X-ray structure of 2a and 3a were solved, showing the first structurally characterised examples of 1-aza-3-phospha-4-metallacyclobut-1-ene rings.
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Publication status
- Published
Journal
Dalton TransactionsISSN
1477-9226External DOI
Issue
12Volume
-Page range
2573 - 2577Department affiliated with
- Chemistry Publications
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- No
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- Yes
Legacy Posted Date
2012-02-06Usage metrics
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